Geometric-based fault diagnosis in a grid-connected inverter

Mashreghi, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/CDC.2018.8619631
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. This paper presents a nonlinear geometric approach to fault detection and isolation (FDI) in grid-connected inverters. Faults are considered in inverter switches as well as in grid voltage and source current sensors. The FDI system is not sensitive to load variations or grid transients. No assumptions on balanced, zero-sum or sinusoidal form of voltages or currents are made. The resulting residual converges to zero in no-fault condition such that no threshold adjustment is needed. Simulations demonstrate performance of the proposed FDI system in presence of unknown disturbance. © 2018 IEEE
  6. Keywords:
  7. Electric inverters ; Fault conditions ; Fault detection and isolation ; Geometric approaches ; Grid connected inverters ; Load variations ; Source currents ; Threshold adjustments ; Unknown disturbance ; Fault detection
  8. Source: Proceedings of the IEEE Conference on Decision and Control, 17 December 2018 through 19 December 2018 ; Volume 2018-December , 2019 , Pages 3421-3426 ; 07431546 (ISSN); 9781538613955 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/8619631